"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : reindex
Case Name   : 使用reindex在线重建数据表索引类型为hash的数据库索引
Create At   : 2021/12/13
Owner       : @zou_jialiang050
Description :
    1.新建数据库
    2.在新建的数据库中建表
    3.向表中插入数据
    4.为表建hash索引
    5.使用reindex在线重建数据库索引
    6.清理环境
Expect      :
    1.新建数据库成功
    2.建表成功
    3.向表中插入数据成功
    4.建hash索引成功
    5.使用reindex在线重建数据库索引成功
    6.清理环境成功
History     :
"""

import os
import unittest
from yat.test import Node
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class SQL(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        self.dbuserNode = Node('PrimaryDbUser')
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.table = 't_reindex_concurrency_test_0029'
        self.index = 'i_reindex_concurrency_hash_0029'
        self.database = 'd_reindex_concurrently_'
        self.Constant = Constant()

    def test_reindex(self):
        step1 = 'step1:创建数据库 expect:创建数据库成功'
        self.logger.info(step1)
        create_database = self.primary_sh.execut_db_sql(
            f'''create database {self.database};''')
        self.logger.info(create_database)
        self.assertIn('CREATE DATABASE', create_database, "执行失败" + step1)

        step2 = 'step2:在新建的数据库中建表 expect:建表成功'
        self.logger.info(step2)
        create_table = self.primary_sh.execut_db_sql(f'''
            drop table if exists {self.table};
            create table {self.table} (c_int int,c_text text);''',
                                                     dbname=self.database)
        self.logger.info(create_table)
        self.assertIn(self.Constant.TABLE_DROP_SUCCESS, create_table,
                      "执行失败" + step2)
        self.assertIn(self.Constant.CREATE_TABLE_SUCCESS, create_table,
                      "建表失败" + step2)

        step3 = 'step3:向表中插入数据 expect:向表中插入数据成功'
        self.logger.info(step3)
        insert_data = self.primary_sh.execut_db_sql(
            f'''insert into {self.table} values
            (generate_series(1,500000),md5(random()::text));''',
            dbname=self.database)
        self.logger.info(insert_data)
        self.assertIn(self.Constant.INSERT_SUCCESS_MSG, insert_data,
                      "执行失败" + step3)

        step4 = 'step4:为表建hash索引 expect:建hash索引成功'
        self.logger.info(step4)
        create_index = self.primary_sh.execut_db_sql(
            f'''drop index if exists {self.index};
            create index {self.index} on {self.table} using hash(c_int);''',
            dbname=self.database)
        self.logger.info(create_index)
        self.assertIn(self.Constant.DROP_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step4)
        self.assertIn(self.Constant.CREATE_INDEX_SUCCESS_MSG, create_index,
                      "建hash索引失败" + step4)

        step5 = 'step5:使用reindex在线重建数据库索引' \
                'expect:使用reindex在线重建数据库索引成功'
        self.logger.info(step5)
        reindex = self.primary_sh.execut_db_sql(
            f'''reindex database concurrently {self.database};''',
            dbname=self.database)
        self.logger.info(reindex)
        self.assertIn('REINDEX', reindex, "执行失败" + step5)
        self.assertNotIn('ERROR', reindex, "执行失败" + step5)
        self.assertNotIn('WARNNING', reindex, "执行失败" + step5)

    def tearDown(self):
        step6 = 'step6:清理环境 expect:清理环境成功'
        self.logger.info(step6)
        de_database = self.primary_sh.execut_db_sql(
            f'''drop database {self.database};''')
        self.logger.info(de_database)
        self.assertIn(self.Constant.DROP_DATABASE_SUCCESS, de_database,
                      "执行失败" + step6)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
